Bath tub



FIG. 1 is a top perspective view of a bath tub showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right end elevational view thereof;

FIG. 5 is a left end elevational view thereof;

FIG. 6 is a cross-sectional view taken along line 6--6 of FIG. 2;

FIG. 7 is a right side elevational view of the bath tub shown in FIG. 1, the left side being a mirror image thereof; and,

FIG. 8 is a cross-sectional view taken along line 8--8 of FIG. 2. 

The ornamental design for a bath tub, as shown and described. 